package day0226;

import java.util.Arrays;
import java.util.Random;//1.

public class Test4 {
    public static void main(String[] args) {
        Random a=new Random();
        int a1=a.nextInt(50);//产生随机整数
        int a2=a.nextInt(100-50+1)  +50;//[50, 100)
    }
}
